A double trimethylsilyl rearrangement ion, m/z 287, C6H5S(OSi(CH3)3)3, was observed in the isobutane chemical ionization mass spectrum of 3‐trimethylsilyl‐9‐(2‐trimethylsilylethylthio)‐1‐phenyl‐3‐phenylsulfonylnonane. The daughter mass spectrum of the protonated molecule produced the rearrangement ion, m/z 287, suggesting that the double trimethylsilyl rearrangement occurred intramolecularly.
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Wood et al. (1992) studied this question.
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